Punching-machine.



P. A. CUENOT 64 L. G. FISCHER.

PUNCHING MACHINE.

APPLICATION FILED JULY 2. 1913.

1,155,552, Patented 001:. 5, 1915.

3 SHEETS-SHEET l.

P. A. CUENOT & L. G. FISCHER.

PUNCHING MACHINE.

APPLICATION FILED JULY 2. I9I3.

Patented Oct. 5, 1915.

3 SHEETSSHEET 2 II I IIIIEHIIIHHIH P. A. CUENOT & L. G. FISCHER.

PUNCHING MACHINE.

APPLICATION FILED JULY 2. 1913.

1,155,552. Patented Oct. 5, 1915.

3 SHEETSSHEET 3.

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un [Macaw COLUMBIA PLANOURAPH 20., WASHINGTON. D. c.

.PAUL A. CUENO'I. AND LEWIS Gr. FISCHER. OF STEELTON, PENNSYLVANIA,ASSIGNOBS TO PENNSYLVANIA STEEL COMPANY, OF PHILADELPHIA, PENNSYLVANIA,A COR- PORATION OF JERSEY.

PUNCI-IINGr-MAGHINE.

Specification of Letters Patent.

Patented Oct. 5, 1915.

Application filed July 2, 1913. Serial No. 776,992.

To all whom it may concern:

Be it known that we, PAUL A. Connor and Lnwrs G. FISCHER, citizens ofthe United States, and residents of Steelton, Dauphin county,lfennsylvania, have invented certain new and useful Improvements inPunching-Machines; and we do hereby declarethe following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it a ppertains to make and use thesame, referencebeing had to the accompanying drawings, and to letters orfigures of reference marked thereon, which forma part of thisspecification.

Our invention relates to spacing tables for punching machines forpunching sheets and bars, and has for its object to provide a removablepin drum to control the operation of the punching table, together withmechanismcooperating with said drum to effect the proper spacing of thetable, as will hereinafter be more fully described and claimed.

Referring to the drawings, in which like parts are similarlydesignated'Figure 1 is an elevation of one form of spacing tableincluding our invention shown in relation to the punch. Fig. 2 is a planview of the spacing table operating mechanism. Fig. 3 is section on thelin'e 33 of Fig. 2. Fig. t is an enlarged detail view of the mechanismcontrolled by the drum and by the punching machine. Fig. 5 is a sectionon the line 55 of Fig. 6. Fig. 6 is a sectional view on line 66 of Fig.2.

In Fig. 1 we have digrammatically shown part of a punching machine, asP, havinga punch p, and such machine is, as usual, provided with a largegear wheel, part of which is shown at G. Thistype of punch is wellknown, and forms no part of our invention. At a suitable point on thegear wheel G, of the punch, we bore a hole and insert a pin 2, forpurposes hereinafter to be described. The punch 7 is located to one sideof the spacing table and overhangs the same. The spacing table comprisestwo longitudinal rack-bars 3, the forward ends of which are connectedtogether by means of a channel iron 4-, as shown in Fig. 1, and the rearends are connected together by pedestal 5, bolted to said rack-bars. Onthe pedestal 5 is secured the cross rail 6 on-whic-h-is clamped thegripper S of any suitable construction, for gripping the work andholding the same during the punching operation. The detailedconstruction of this gripper also forms no part of our invention. Therack bars 3 are traversed by pinions 7, preferably located near thepunch, and at suitable points are provided with pedestals D, Fig. 1.only one of which is illustrated. 9n each of these pedestals are twopairs of rollers 8,

on which the flanges of a rack-bar 3 bear, the rack teeth passingbetween the two rollers of a. pair. Extending up between the rack-bars 3is a supporting roll 9 for supporting the work, either a sheet or a bar.

The mechanism for starting and stopping the traverse of the rack-bars 3,that is to say, the. mechanism for driving and controlling the pinions7, that directly engage the rack bars, is best shown in Figs. 2 and 3.

in electric motor E has a pinion 10 that drives a small gear wheel 11,on a shaft 12, mounted in a pedestal 13. Gear wheel 11 drlves a largergear 1% mounted on a shaft 15. The shaft 15 is in two parts, connectedby a friction clutch of any suitable type, here shown as a cone clutch16, and at its opposite end has a pinion 17 that drives a gear wheel 18on a shaft 19, said shaft having a pinion 20 thereon, which piniondrives a gear wheel 21 on a shaft 22 on which pinions 7 for traversingthe rack-bars are mounted. ()n the shaft 22, which is the main actuatingshaft for the table, is keyed a wheel 23, having a flange 24, whoseinternal face is provided with serrations, preferably saw-toothserrations, that are very close together, for example, in theneighborhood of one-sixteenth of an inch from point to point.

The serrated flange 24, 25 is engaged by a stopping mechanism, that is.it is gripped by a gripper when it is desired to stop the wheel 23, forpurposes to be hereinafter described, and this gripping is done onlyafter clutch 16 has been released. The gripper comprises a lever 26(Fig. 3) pivoted at 27 in cars 28 on a plate" 29, and on the other. endof lever 26 is formed a gripping shoe 30, conforming to the curvature ofthe flange 24.

Pivoted at 31 to the lever 26 is a lever 32, also having a gripping shoe33, whose face is serrated to correspond to the serrations 25. The lever26 supports the lever 32, and

when the jaws are disengaged from the flange or rim 24, the front end oflever 26 rests on a support 29 on plate 29. The upper end of lever 32has a pin and slot con nection 34, 35, with one end of a differentialpiston 36 that operates in an air cylinder ber of coupling 16.

The wheel 23 which is the templet carrier is provided near its peripherywith a number of bolts 44, each of which bolts is provided with athumb-nut for holding clamping members 46. Each clamping member has oneend engaging the wheel 23, and, the other end engaging an internalflange 47 on a templet drum 48. The flange seats in the peripheralrabbet, in the wheel 23, as clearly illustrated in Fig. 2. The surfaceof the drum 48 is provided with a spiral line 49 of any desired pitch,but preferably about one-fourth inch pitch. The circumference of thedrum is equally divided by parallel lines 50, one of which 50 is deeperor wider than the others, in order to distinguish it as a zeropositioning line.

I We have found it convenient to divide the periphery of the drum into300 divisions,

more or less, the drum being about twentyfour inches in diameter, thusmaking the divisions about one-fourth of an inch-apart.

At each intersection of the spiral line 49 with the parallel lines 50,50 we bore and ream a one-eighth inch hole for the reception of taperpins, such as 51. The drum 48 thus forms a'perpetual templet.

Parallel to the drum 48 is a carriage 52 mounted on a pedestal 53, andon this carriage is the mechanism for controlling the stopping of thepin drum and table which is itself controlled or set in operation by thepins on said drum. The carriage 52 contains valves for controlling theclutch piston 36, and said carriage has a sliding member 54 (Fig. 6)held projected toward the templet drum 48 by means of a spring 55contained within a recess 56 in said slide, said spring having one endengaging-a pin 57 and the other'end engaging the end wall of saidrecess. The slide 54 has a projecting arm 58 in which is pivoted at 59 abell-crank 60 lever, one arm 60 of which is limited in its upward swingby a set-screw 61 and a locknut 62, which arm is adapted to be engagedby the pins 51 in the templet drum. The other arm 63 of said bell-cranklever carries a screw 64 locked thereto by lock-nuts 65,

said screw engaging the'spindle 66 of a valve 67. The valve 67* is urgedto its seat 68 by a spring 69. Compressed air. is supplied to thechamber-of valve 67 through the hose connection or nipple 70. As soon aspin 51, Fig. 4, strikes arm 60, the bell-crank lever 1s rocked on 1tsplvot 59, causlng screw 64 to ur e the valve rod 66 a 'ainst valve s rinin b 69 and thereby admit compressed air through the valve seat 68 to achamber 71.

The chamber 71has an outlet 72 to a rubber hose 73 leading to a hoseconnection 74 to the right hand end of-cylinder37, Fig. 3. The left.hand end of this cylinder .has a rubber hose 78 connected thereto,admitting live air to said endof the cylinder, and to the smallerpistonarea. This air 'is-taken directly from the air line, and the airpressure is maintained constant on the smaller 7 area of the pistonimderall conditionsof working. As soon as compressed air is admitted throughvalve 69 into the chamber 71 and through the rubber hose 73 to theconnection 77 of cylinder 37 and on the.

largersurface of the piston 36, said piston 36will be moved to the left,Fig. 3, forcing the compressed air on the leftshand side of the'pistonand on the smaller area thereof, back through-7 8 into the line, andcausing the gripper jaws 30, 33, to engage thejfiange or rim 24 of wheel23, to stop the rotation thereof.

The carriage 52is traversed by a screw 53. On the screw 53 is a gearwheel 79, Fig. 4, with which meshes a larger gear. wheel 80, Figs. 2 and4. This gear wheel 80 issecured on one end of a short shaft 8l mountedin a bracket 82. On the other end of the short I shaft'81 is secured agear wheel 83 that meshes with one of the racks 3,,so that the movementof the rack controls the traverse of the carriage.v The mechanismdriving the screw causes said screw to operate, that is the screw isalways running when the-spacing table is in motion. r

On chamber 71 is a valve 90 urged to closed position by a spring 91,Fig. 5, the object of said valve being to vent chamber 71, andconsequently the'righthand endof cylinder 37, to the atmosphere as soonas the punch 0 has completed its operation.

This is done by lever mechanism actuated by the pin 2 on gear G of thepunching machine. This pin 2 engages a bell-crank lever 92, Figs.- 2 and4, which bell-cranklever operates on a pivot 93 secured in a. bracket93? on the punching machine. This bellcrank lever is connected by. alink 94 to an upwardly and downwardly directedwlever 95, mounted on ashaft 96 held in bearings end of which is provided with a hole 108 inwhich bears a trunnion pin 109 formed on a bar 110 which rests in a slotin fixed supports 111. The bar 110 has a slot 112 extending its wholelength, receives a pin 113 (fixed on slide 5 1) engaging'a bell-cranklever 11 1, which bell-crank lever 114 enters an opening in the spindleof valve 90, Figs. 4: and 5. The pin 113 is fixed tothe slide 5 1 whichwill be retracted when motion is imparted to the bar 110, drawing thecrank 60 out of engagement with pin 51 on the drum 48, to permit thenext pin thereon to actuate the crank 60.

Briefly, the actuating shaft 22 is suitably driven to move the table andsimultaneously rotate the templetor drum &8, the table traversing theslide 52 with the control valves 67 and 90. The pins'on the drums,operate the valve 67 controlling the stopping mechanism, therebydisconnecting the drivage for the main shaft 22 and simultaneouslyoperating the stopping mechanism for drum and shaft. The punchingmachine is then operated, and after the punching operation starts thestarting mechanism, thus moving the table and drum and traversing thecontrol mechanism until another pin on said drum comes into operation,and specifically the operation is as follows :Theremovable templet drum18 whose speed is about four times that of the rack, has a number ofpins set along the spiral line 419 that is graduated to feet, inches andfractions of an inch, starting from the zero line 50% The pins 51 arespaced along the spiral line 49 in accordance with the distance apartthat the holes are to be punched in the bar or bars. There may be onlyone punch, 79, or a gang of punches, so that several plates, angles,

&c. may be simultaneously identically punched. If staggered holes are tobe punched, then the pins 51 are alternately bronze and steel, squareandround, or otherwise. distinguished, so that the punch operproper gagsfor the punches.

As soon as pin 51, Fig. at, strikes bellcrank lever arm 60, the airadmission valve 67, Fig. 6, is actuated to admit air from the air lineto chamber 71, hose 73, to cylinder :37. Pistoniifi is then moved, firstreleasing clutch 16 and operating gripper 80, 83, to

stop the drum and its shaft 22, thereby stopping racks 3 and the articleto be punched,

at the proper point. The punching operator then operates the punches,and'in so do ing causes gear-wheel G to rotate, so that as soon asthepunches 79 have been retracted the-pin 2 in said-wheel G strikes thebellcrank lever 92, Fig. 4. The movement of 92 is carried by rod 94 tolever- 95 atone end of shaft 96, and the movement of shaft '96 by crank102 and link 103 imparts movement to crank 104 on shaft 105, whichhaving cranks 106on each end, attached to links 107, which are alsoattached on trunnion.

pins 109 at the ends of bar 110, causes the movement of shaft to imparta. lateral movement to bar 110 and the pin 113, which passes through theslotted horizontal part projecting from the end of the vertical arm ofbell-crank 111 which by its lower horizontal arm operates valve 90, tovent the right hand end of the cylinder 37 to the atmosphere.

Air line pressure existing on the left hand end of piston 36 immediatelycauses this piston to move to the right, first releasing thegripper 30,33, and then connecting the clutch to drive the table another step untilthe next templet pin 51 comes into operation.

The movement of the pin 113 also draws back slide 51, withdrawing crank60 out of engagement with pin 51 on drum 18. The next templet pin 51then strikes bell-crank lever arm 60. and the operation is repeated.

' lVe claim- 1. In a spacing machine. a traversable table. mechanism fortraversing the table, a pin drum stopped when the table is stopped. andpneumatic mechanism controlled by the pins in said drum to disconnectthe traversing mechanism tostop the drum and table.

In a spacing machine, a traversable table, mechanism for traversing thetable, a templet drum having templet pins arranged in a spiral linethereon, pneumatic control devices actuated successively by said movelongitudinally into register with said spiral line. and a starting andstopping mechanism for said table and drum controlled by said devices.

3. In a spacing machine. a traversable table. mechanism for traversingthe table, a pin drum stopped when the table is stopped. pneumaticmechanism controlled by pins on said drum to disconnect the traversingmechanism to stop the drum and table and means operated by the table totraverse the pneumatic mechanism. 4. The combination with a punching machine, of a traversable spacing table, mechanism for traversing thetable, means on the inachine foirrontrolling the starting-of saidmechanismi a stopping mechanismand meansdriven by the traversingmechanism to control the operation of the stopping mechanism."

In a spacing machine, a travel-sable table;l'nechanism for traversingthe table, a pin drnm,"mo \'able pins in spiral spaced relation int-hedrum. mechanism for suddenlystoppingthe'drum: and table, controllingmechanism} controllingthe stopby the pins in said drum.

I 6. Ina spacing table, an actuating shaft, a pin drum on'said shaft,means to hold said shaft stationary, mechanism for driving said shaft,and controlling mechanism actuated from said drum for simultaneouslydisconnecting thedriving mechanism and actuating the drum holding means.

7. In a spacing tfible tlleCOlIlblIltltlOIl with a pin drum, of a slide,an air valve and a vent valve carried thereby, means actuated by thepins of' said drum to control the air valve, mechanism for operating thevent valve and simultaneously moving the air valve operating mechanismout of operative relation to said pins, and mechanism for traversing theslide.

8. In a spacing table, a shaft from which said table is driven, acylindrical templet secured thereon having holes spaced around thetemplet, pins for insertion in said holes and mechanism actuated by thepins for controlling the movement of the table a 9. In a spacing table,a shaft from which said table is driven, a cylindrical templet thereonhaving holes therein in spaced spiral arrangement, pins for insertion insaid holes and mechanism actuated by the pins for controlling themovement of the table.

10. In a spacing table, a shaft from which said table is driven, acylindrical templet detachably mounted on the shaft and having holesspaced around the templet, pins for insertion in said holes, andmechanism actuated by the pins for controlling the movement of thetable.

, 11. In a spacing table, a shaft from which said table is driven, acylindrical templet detachably mounted on the shaft and having holes inspaced spiral arrangement, pins for insertion in the holes, andmechanism actuated by said pins for controlling the movement of thetable.

12. In a spacing table, a shaft, a wheel secured to the shaft, acylindrical templet drum having spaced templet holes therein, aninternal flange at one end, means on said wheel to cooperate with saidfiangeto accurately center the drum. and removable clamping devices onthe wheel for engaging said flange. v I v 1.3. In a spacing table, ashaft, a wheel secured to said shaft having a peripheral rabbet, acylindrical templet having a flange, and removable clamping means on thewheel and engaging the flange to hold it in the rabbet and therebysecure the templet to the wheel.

1%. In a spacing table, the combination with a shaft,- a wheel thereonhaving a flange, a templet detachably secured to the wheel, a pivotedjaw acting on one side of; the flange, a second jaw pivoted toth'e firstjaw and acting on the other'side of the flange, and power mechanismtoswing said second jaw and cause both jaws to move to and from thewheel j 15. In a spacing table, the combination with a shaft, a wheelthereon having a flange, a templet detachably secured to said wheel,gripping jaws for engaging the flange, a pneumatic piston and cylinderfor operating the jaws, and valve mechanism operated by thetemplettoadmit pressure to one side of saidpiston and separate mechanismfor venting the pressure from the cylinder. V V

16. In a spacing machine, the combination with traversable racks, ashaft, pinions on the shaft meshing with the racks, a wheel on the shafthaving a flange, a templet drum detachably secured to the wheel,gripping jaws for engaging theflange, a differential pneumatic pistonand cylinder for operating the jaws, the smaller end of said pistonbeing under substantially constant pneumatic pressure, driving-mechanismfor the shaft, a clutch operated by saidpiston ,to connect anddisconnect the driving mechanism, a vent valve and mechanism broughtinto operation after a punching'operation to vent said valve to releasethe pneumatic pressure on the larger side of the-piston and therebyrelease said jaws and clutch the driving mechanism. v v

17. In a spacing table, the combination with racks thereon, of anactuating: shaft, pinions on said shaft engaging the racks, a templetcarried by said shaft, gripping mechanism to hold the templet and'shaft,a differential pneumatic piston and cylinder for operating saidmechanism, driving mechanism, a clutch operated by said piston toconnect and disconnect the drivingmechanism, a slide, a screw fortraversing-the slide driven from arack, a valve on the slide,abell-crank one arm of which operates the valve and the other arm ofwhich is operated by the templet, said valve controlling the admissionof air to the cylinder, yielding means for holding said lover, a ventingvalve on the slide, a rock lever on the slide having one arm foroperating the vent valve and the other arm engaging a pin on theyielding means, a slotted bar in which said pin travels and means torock the bar to move said yielding means to simultaneously withdraw thebell-crank from the path of the templet and operate the venting valve.

18. In a spacing mechanism the combination with a spacing table, atemplet having .stop pins, said pins-arranged in a spiral on thetemplet; of control mechanism traversed before said templet inaccordance with said spiral and actuated by said pins, and meansactuated from the table to traverse said mechanism: 1

19., In a spacing mechanism, the combination with a spacing table, atemplet having pins thereon laterally and longitudinally spaced andmeans to move the templet; of control mechanism including a contactingelement, a screw driven from said table to move the control mechanismand to permit the templet pins to contact with said elementsuccessively.

20. In a spacing mechanism, the combination with a table, a templethaving removable stop pins therein arranged in a spiral, and mechanismfor driving said templet and table, of control mechanism traversedbefore said templet in accordance with said spiral, and actuated by thetable.

21. In a spacing table, the combination with a rotatable templet andtemplet carrier, and pins for the templet; of means to engage and holdthetemplet against rota- PAUL A. CUENOT. LEWIS G. FISCHER.

Witnesses:

CHAS. R. HOLTON, J. HARRY PRowELL.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents.

Washington, D. 0.

